then you did not install the opengl dev deb you are missing some basic prerequisites

install the mesa AND mesa dev packages

you are missing libGL.so and the headers

now if you have a Nvidia 3d card this ( libGL) is already installed IF you are using the nvidia driver and not the nouveau driver

Thanks for the quick reply.

I do have an Nvidia card, running the proprietary driver version 352.21 (because my GTX 970 card is not supported by the Ubuntu repository's Nvidia drivers yet).

I listed all of the installed packages on my system containing the string 'libgl' via the command "dpkg --get-selections | awk '/libgl/{print $1}' | xargs dpkg-query --show $1". This produced the following list: